/* * {
    margin: 0;
    padding: 0;
    border: none;
}
.container {
    background-color: #fff;
    border-radius: 50%;
    -webkit-border-radius: 50%;
    -moz-border-radius: 50%;
    -ms-border-radius: 50%;
    -o-border-radius: 50%;
    height: 500px;
    margin: auto;
    width: 600px;
}
h1 {
    color:#495678;
    font-size: 30px;
    margin-top: 20px;
    padding-top: 50px;
    text-align: center;
    text-decoration: none;
}
form {
    background-color: #495678;
    box-shadow: 4px 4px #3d4a65;
    margin: 40px 0 30px 40px;
    width: 280px;
}
.btn {
    outline: none;
    cursor:pointer;
    font-size: 20px;
    height: 45px;
    margin: 5px 0 5px 10px;
    width: 45px;
}
.btn:first-child {
    margin: 5px 0 5px 10px;
}
.btn,#display,form {
    border-radius: 25px;
    -webkit-border-radius: 25px;
    -moz-border-radius: 25px;
    -ms-border-radius: 25px;
    -o-border-radius: 25px;
}
#display {
    outline: none;
    background-color: #98d1d3;
    box-shadow: inset 6px 6px 0px #3facc0;
    color:#dededc;
    font-size: 20px;
    height: 47px;
    text-align: right;
    width: 165px;
    padding-right: 10px;
    margin-left: 10px;
} */
/* Basic Reset */
* {
	border: none;
	padding: 0;
}

.center {
	background-color: #fff;
	border-radius: 50%;
	height: 600px;
	margin: auto;
	width: 600px;
}
h1 {
	color: #495678;
	font-size: 30px;	
	margin-top: 20px;
	padding-top: 50px;
	display: block;
	text-align: center;
	text-decoration: none;
}

form {
	background-color: #495678;
	box-shadow: 4px 4px #3d4a65;
	margin: 40px auto;
	padding: 40px 0 30px 40px;	
	width: 280px;
}
.btn {
	outline: none;
	cursor: pointer;
	font-size: 20px;
	height: 45px;
	margin: 5px 0 5px 10px;
	width: 45px;
}
.btn:first-child {
	margin: 5px 0 5px 10px;
}
.btn, #display, form {
	border-radius: 25px;
}
#display {
	outline: none;
	background-color: #98d1dc;
	box-shadow: inset 6px 6px 0px #3facc0;
	color: #dededc;
	font-size: 20px;
	height: 47px;
	text-align: right;
	width: 80%;
	padding-right: 10px;
	margin-left: 10px;
}
.number {
    background-color: #72778b;
    box-shadow: 0 5px #5f6680;
    color: #dededc;
}
.number:active {
    box-shadow: 0 2px #5f6680;
    transform: translateX(5px) ;
    -webkit-transform: translateX(5px) ;
    -moz-transform: translateX(5px) ;
    -ms-transform: translateX(5px) ;
    -o-transform: translateX(5px) ;
}
.op {
    background-color: #dededc;
    box-shadow: 0 5px #bebebe;
    color: #72778b;
}
.op:active {
    box-shadow: 0 2px #bebebe;
    transform: translateY(2px);
    -webkit-transform: translateY(2px);
    -moz-transform: translateY(2px);
    -ms-transform: translateY(2px);
    -o-transform: translateY(2px);
}
.sp {
    background-color: #e3844c;
    box-shadow: 0 5px #e76a3d;
    color: #dededc;
}
.sp:active {
    box-shadow: 0 2px #e76a3d;
    transform: translateY(2px);
    -webkit-transform: translateY(2px);
    -moz-transform: translateY(2px);
    -ms-transform: translateY(2px);
    -o-transform: translateY(2px);
}
footer {
    font-size: 12px;
    text-align: center;
} 